Charles j



(No Model.) I

r C. J. KLEIN. SUPPORT POR ELECTRIC LAMPS.

No. 471,645. Patented-Mar. 29, 1892.

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- tachment of an outside shell concealing Y- attaching devices.

Another feature of the improvement con- UNITED STATES PATENT OFFICE.

cIIARLEs J. KLEIN, oE'NEw YoRK, N. Y.

SUPPORT FOR ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 471,645, dated March 29, 1892.

Application tiled December 1, 1890. Serial No. 373,155. (No model.)

p of which the following is a specification.

The principal feature of my present improvement has for its object to provide for attaching electric lamps of different patterns to one support.

My improvement also comprises a novel atthe sists of means for completing an electric circuit through a lamp or cutting it off from the lamp.

To facilitate an understanding of my improvement I have in the accompanying drawings not only illustrated it, but I have also shown the position of electric lamps to which it is applicable.

. In the accompanying drawings, Figure 1 is va side viewof the base of an Edison lamp.

Fig. 2 is a sectional side view of the baseof a Thomson-Houston electric lamp. Fig. 3 is a side view of the base portion of aVestinghouse lamp. Fig. 4 is a side view of a support embodying my improvement. Fig'isa top view of my support. Fig. 6 isaside view of a shell which is connected with said support for attaching the Edison lamp thereto. Fig. 7 isa side view of a support embodying my improvement in condition for*y use with a Thomson-Houstonlamp. Fig. 8 is a side view of a shellwhich is tov be fitted to said support for attaching the Vestinghouse lamp thereto. Fig. 9 is a side view of a shell constructed so as to serve for attaching either an Edison lamp or a lVestinghouse lamp to a support made according to my improvement. Fig. 10 is a side View of a shell of novel construction which is intended to it outside my support and the base portion of a lamp connected thereto. Fig. 11 is a central vertical section of this shell and an interior insulatinglining. Fig. 12 is a side view of asup'port of modified construction and differing from the form of my 'support rst illustrated by hav ing a key or circuit-changer comprised in it. Fig. 13 is a top view of the support shown'inl Fig. 12. Fig. 14 is a side view of a support ofmodifed construction, also having a key or lcircuit-c hanger, but one slightly diering from that illustrated in Fig. 12. Fig. 15 is a bottom view of the base of the support shown in Fig. 14. Fig. 16v is a side view of the base of the support shown in Fig. 14, but taken'in a plane at right angles to that of Fig. 14. Fig. 17 is a vertical section showing'a modification.

Similar letters of reference designate corresponding parts in all the'figures.

It will be seen that the base of the Edison lamp shown in Fig. 1 has a coarse screwthread a formed upon it. This screw-thread is formed in a sheet-metal shell, which is insulated from the rest of the lamp. One wire a', extending from the incandescing filament extends to this sheet-metal shell. The other wire, extending from the incandescent filament, leads to a metal plate 0.2, which is insulated from the metal shell upon which the screw-thread a is formed.

Looking at Fig. 2 it will be seen thatv the base of the Thomson-Houston lamp is sur- .rounded by a metal shell b and that its bottom has a metalplate b2y attached to it. The

shell b and the plate b2 are insulated from each other. An internally-screw-threaded metal socket bis also fastened to the base of this lamp and it is intended to form the means of attachment to the support. This socket is insulated from the plate b2 and shellv rib c3 and a circumferential groove c4, serving as a means for fastening them to their ports.

. The support which I have illustrated iii Figs. 4, 5', and 7 has a body A, of hard rubber or other insulating material, made mainly of cylindrical form, but having a ilat surface 01.3

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down the front of the flat surface a3 of the bodypiece and is here provided with a screw c6, whereby a wire may be fastened in electrical communication with it. At the center of the body-piece is an' externally-screw-threaded tubular metallic nipple a7, which is inserted in the neck-like portion of the body-piece and has a lug extending from it over the front of the surface as of the body-piece, where it is provided with a screw as, suitable for electrically connecting a wire with it. The circuit-wires are intended to be extended to the screws a6 d8. l

I have shown the base of the body-piece as iitted to a metal disk a9, provided on the under side with a socket d10, whereby the entire support may be fastened to any7 suitable sustaining device-as, for instance, a lamp-fixture of any approved form.` The disk a9 may 4be fastened to the body-piece by means of will then bear against the strip a5 of the support. In this way the electric current will be continued from the screws a6 as through the nipple u.7 and the strip a5 to the socket b3 and lplate b2 of the lamp, and thence to the incandescent filament.

Outside the support and the base portion of the lamp a shell D (illustrated in Figs. 10

and vl1) may be used. It has a lining d of insulating material, so as to prevent it from interferin g with the circuit connections. When this shell is used, the disk a9 ot' the support will be extended beyond the body-piece thereof, so as to receive and support the lower end of the shell D. A convenient means for attaching the shell D to the disk a9 may be produced by slitting the lower portion ofthe shell D vertically, so as to form tongues d ,and extending the latter below the shell and providin g them with transverse extremities cl2. Th en the disk a9 of the support will be provided with radial notches am (see particularly Fig. 15) and grooves 0,13, extending substantially parallel with the circumference of the disk. By placing the shell D upon the support and bending the tongues outward when opposite the notches a12 the tongues, after the lowering of the shell D sufficiently to carry the transverse extremities of the tongues below the disk d, may be made to pass through said notches. The tongues may then bebent inward, or they may be so constituted as to move inward by theirresilence, so that their extremities d2 will enter and engage with the grooves a of the disk a9. When this happens, the engagement of the shell with the disk will be complete.-

To secure the Edison lalnp, Fig. I, to my support, a shell E, made of metal and slitted or notched in the lower portion, so as to be somewhat resilient, is slipped over the strip a5 of the support. This shell E is screw-threaded to correspond with the shell a of the base portion of the Edison lamp. The strip a5 of my support is also made outwardly rounding, so that it may be engaged by that screw-thread or portion of the screw-thread of the shell E which is nearest the lower edge of the latter. Obviously by engaging the shell E with the strip d5 said shell will be secured to the support, and'when the Edison lamp is iitted to it wil-l continue the electric circuit from the screw a6 of the support to the shell a of said lamp. The plate a2 of the lamp will contact with the top of the nipple a7 of .the support,

and thus the electric circuit will be continued between the screw a8 and the plate a2 of the lamp. i

The shell D may be applied to the support when the Edison lamp is fitted thereto in the same manner as I have described its application in conjunction with the Thomson-Houston lamp.

' In order to fasten the Westinghouse lamp to the support, I apply to the support a shell G of sheet metal. (Shown in Fig. 8.)` This shell is mainly of cylindric form, is slitted or notched at the bottom, like the shell E, and has at the lower edge grooves which engage the strip a5 of my support, is also slitted at the upper end to engage with the rib c3 on the shell c, surrounding the base of the Westinghouse lamp. When this shell is fittedA from said pin or stud through said nipple to` When the Westinghouse lamp the screw as. is thus connected with my support the shell D may` be-usedas before described."

In Fig. QI have shown a shell H which is very much like the shell Gr just described, but has its upper portion screw-threaded, and thereby is enabled to form a means for attaching the Edison lamp as well as the Westinghouse lamp.

In Figs. l2 and 13 I have shown a modified form of support. It has a body-piece A of insulating material, as in the first-described example of my support, and this body-piece is similarly provided with a metal strip a5 and a metal nipple a7. This support, like the first-described, has also a disk a9. This disk a9 is, however, arranged considerably below the body-piece, and is connected therewithv by upright arms or brackets 0,14, which may bemade of metal strips having their extremi- IOO ties bent transversely and fastened to the disk and body-piece by screws. In this eX- `ample of my improvement the circuitis eX- strip a5 is in electrical communication with aV metal bracket al, extending downwardly from the body-piece A. To this bracket a lever a, made of insulating material, is fulcrumed by means of a metal pin als. A metal piece al@ covers a portion of the lever a" and receives through it the pin als, so that it is in electrical communication therewith. The metal strip @15 is bent downwardly and then upwardly, so as to have the general form of the letter V. It is made resilient and its limb d20 is free. This limb has preferably formed in it a notch suitable for engagement by that end of the lever @L17-to which the metal piece als is applied. The metal piece aw covers but the upper portion of the arm of the lever a, to which it is applied. Hence when this lever is rocked into one position the metal piece 0,16 will be in electrical contact with the limb a2@ of the strip C015, and when the lever is oscillated into a reverse position said metal piece am will be'moved'out of contact wit'hthe strip e615. Obviously by oscillating the lever L17 into and out of engagement with the strip @15 the circuit may be continued or interrupted;

When alamp is connected with the support, the circuit will be from a lead-wire to the binding-post d6, through the strip C015 to contact al@ the support a, the contact a5, thence through lamp-lament to nipple a?, to binding-post d8,

and out. By moving the contact on the keylever away from the strip L15 the circuit will be broken.

The shells E G H might be internally screwthreaded and the 'metal strip a5 of the support externally screw-threaded, as shown in AFig 17. IIere the shell is marked S, and may be considered as either of the shells previously designated E, G, and H, and it need not be slitted or notched at the lower end.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The combination, with a `lamp-support having a neck-like portion provided with a metal strip and a ycentrally-located nipple insulated from said metal strip, of a shell detachably secured thereto I for fastening an electric lamp to said support, substantially as specified.

2. The combination, with a lamp-support -having a neck-like portion provided :with a metal strip and a centrally-located metal nipv ple insulated from said metal strip, of a shell detachably secured thereto for fastening an electric lamp to said support and continuing an electric circuit from said support to said lamp, substantially as specified.

3. The combination, with a lamp-support, of a shell slitted or notched at the lower portion and screw-threaded, indented, and slitted at the upper portion and detachably vsecured thereto for fastening an electric lamp to said support, substantially as specied.

4. The combination, with a lamp-support provided with notches, of a shell detachably secured thereto for fasteningan electric lamp to said support, and a shell D, having tonguelike portions termin ating in transverse eXtensions, substantially as specified.

5. The combination, with a lamp-support, of a shell adapted to be removably secured thereto and screw-threaded, indented, and slitted at the end portion opposite to that which is secured to the support, substantially as specified.

6. A support for a lamp, having a resilient contact-strip bent downwardly and then upwardly and having a notch in its upwardlyturned end, a rocking lever of insulating material in said support, and a metal piece on the rocking lever adapted to engage with the resilient contact-strip within its notch and close a circuit, substantially as specified.

7. In a support foralamp, the combination of a body of insulating material mainly of cylindric form, but having a flaty surface a3" formed in its side, a neck-like portion on the upper end of the body, ametal strip extending partially around the" neck-like portion and having one end turned into a notch in the neck-like portion audits opposite end connected to a binding-screw on the iat surface of the body, and anipple on the body connecting with a binding-screw on the flat surface, substantiallyas specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CIIAS. J. KLEIN.

Witnesses:

L. E. FRORUK, JNO. F. GEIDEL.

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